Grinding-machine.



H. B. NICHOLS.

GRINDING MACHINE.

APPLIGATION FILED DEO.28,1911.

Patented Aug. 6, 1912.

2 SHEETS-SHEET} H. B. NICHOLS.

GRINDING MACHINE.

ABPLIOATION TILED D20, 28, 1911.

Patented Aug. 6,1912.

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HENRY B. NICHOLS, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 WILLIAM D. GHERKY, OF PHILADELPHIA, PENNSYLVANIA.

GRINDING-MACHINE.

Specification of Letters Patent.

latented Aug. 6, 1912.

original application filed December 22, 1910, Serial No. 598,840. Divided and this application filed.

December 28, 1911.

'1 0 all whom it may concern:

Be it known that I, HENRY B. NICHOLS, a

citizen of the United States, residing at is a specification, reference being bad therein to the accompanying drawing.

This specification is a division of my application, Serial No. 598,840, filed December 22nd, 1910, on a grinding machine.

The present application relates particularly to the construction and arrangement of the grinding element, and its combinatioi'i with the main truck frame on which it is mounted. This arrangement is a special feature of applicants invention and was invented with a view to the securement of: ready manipulation and adjustment, and etiicient operation.

In the application referred to, and in the accompanying drawings, 1 show only one form of grinding element, to wit: a reciprocating form, and further I show as a whole, only one embodiment of my invention. But I desire to have it understood that in its broad aspect, my invention is not limited to one form of grinding element, nor is it capable of one embodiment only. Other forms of grinding element might be substituted for the reciprocating grinding element, and my invention as a whole might be given any one of several embodiments by those skilled in the art without departing in any wise from its limits.

Of the accompanying drawings: Figure 1. is a view of a portion of Fig. 1 of the parent application showing the grinding element in side elevation, Fig. 2 is a view ot a portion of Fig. 2* of the parent application showing the grinding element in plan, and Fig. 3 is a transverse section of the grinding element and its mounting after Fig. 5 of the parent application. Figs. 4 and 5 are respectively longitudinal and transverse sections. of the brick holder and connected. parts, showing the means for canting and adjusting the bricks.

All of the parts are numbered as in the parent application.

The sides 29 of the main truck frame are extended forvwirdly and embrace the truck wheelflfi journaled between them. The rear Serial No. 668,328.

.truck wheels are not shown in this application, but they are secured to the frame men1- bers 29 and support the frame on the trackway in a manner entirely similar to that in which the truck wheel 5 is secured to the sides of the frame, and bears upon the trackway. The details of this construction will not be entered into here.

In proximity to the wheel 5, the upper and lower flanges of each of the side members are provided with smooth slides 18 and 19, upon which rest the guides 20, 21, 22, 23, 24, 25 and two others not shown, attached to the carriage 26, which forms the reciprocating element of the machine and has at one end a pair of cars 27 to. receive the pivotal end of a connecting rod which is journaled on the truck frame to reciprocate.

Returning to the reciprocating carriage 26, this is titted with vertical. end slides and 43, which enter guide slots formed vertically in the ends of a heavy block or brick holder ll. This block is an iron frame and is purposely made massive so as to exert heavy pressure upon the grinding surface in operation. It is tree to slide up and down in the carriage, its weight being normally supported entirely on the grinding bricks 45 as they rest upon the rail. In order to raise it out of engagement with the rail when the machine is to be moved or for purposes of inspection, the brick holder is provided with trunnions 4c and d7, upon which are pivoted a pair of cams 4S and 41), secured to and operated by a pair of connected levers and 51, whose return bar or handle 52 constitutes in effect a bail which normally lies flat as shown in Fig. 1, across the top of the end piece 3 oil the frame, where it is en tircly out of the way. (in lifting up the bail however, the cams 4'8 and U) are turned upon the trunnions at and t7, and lift the block 44: together with the grinding bricks and other attaclnncnts thereon, and when the bail is thrown over past center, the cam rests on its reverse face, so that the block will be held up automatically as long as do- The brass box or frame containing the bricks is indicated at 161 in Fig. l, and is pivoted on massive trunnions shown at 162 and 163 in Fig. 4: in bearings in the block 44. It is canted for oblique grinding, by means of the two nuts 164 and 165 threaded on a bolt 1.66 sliding through the bosses 167 and 168 and secured intermediate of said bosses in a head 166 projecting upwardly from the box 161. The bricks can thus be set at any angle, as the frame is rocked on its trunnions. The advantages of this should be most readily apparent, for not only does this provision make it possible to grind rail surfaces at any angle to the horizontal and to the plane of the main truck frame, but grinding on curves is facilitated, and grinding-of edge and trough irregularities may be most readily accomplishe I desire to cover in the annexed claims, all embodiments which my invention may be given by those skilled in the art.

, Having thus described my invention what I claim and desire to secure by Letters Patent is: v

1. A rail grinding machine comprising a frame, means for supporting is same over a rail to be ground, and a gri dingelement secured on the frame with means for transverse angular adjustment threon, for obliquegrinding of the rail surface.

2. A .rail grinding machine comprising a main truck frame, a grinding element 6n said frame mounted in a longitudinally ex tending vertical plane for movement about a longitudinal axis, and means for canting said grinding element v laterally of said plane.

3. A rail grinding machine com rising a main truck frame and wheels a apted to travel.over a trackwayfa grinding element mounted thereon for movement about a longitudinal axis, said grinding elementlying normally in a plane parallel to the plane of the wheels on one side of the truck, and said longitudinal axis lying on one side of said truck frame and adjacent said plane.

' 4." A rail grinding machine comprising a "main trnck'frame, a grinding element on said frame, mounted in a longitudinally'extending vertical plane for movement about alongitudinal axis, and means operative independently of the trackway for cant-ing 5 said grindingelement' laterally of said plane.

5. A. grinding machine having a truck frame, track Wheels, a grinding element,

an auxiliaryframe carrying said grinding oblique adjustment with respect to the rail surface, and a grinding element in said holder.

' 7. A. rail grinding machine comprising a main truck frame and wheels adapted to travel over a trackway, an auxiliary frame connected with said main frame, and vertically movable with respect thereto, a grinding element mounted thereon for movement about a longitudinal axis, said grinding element normally occupying a longitudinally extending vertical plane, means for moving the auxiliary frame vertically, and independent means for canting the grinding element by movement about the longitudinal axis.

S. A rail grinding machine comprising a main truck frame and wheels, a grinding element connected with the frame normally occupying a plane parallel to the plane of the wheels, and means acting on a line transversely of said main truck for canting said grinding element out of its normal plane.

9. A grinding machine having a truck frame, track wheels, guides on the frame, a carriage arranged to travel in said guides, means to drive thecarriage, a holder pivoted in said carriage for oblique adjustment with respect to the rail surface, and a grinding element in said holder, together with means for locking the holder and grinding element in adjusted position.

10. \A grinding machine having a truck frame, track wheels, guides on said frame, a carriage fitted to said guides, a box or holder mounted on trunnions inthe ends of said carriage, grinding means secured in said box or holder, and a transverse screw connection between the box or holder and the carriage on a line eccentric to the axis of the trunnions, with locking means for said screw connection," whereby the box or holder may be laterally adjusted in the carriage for. the oblique grinding.

Ill/A grinding machine comprising a frame, track Wheels and a grinding-element, means'for adjusting said grindipg element obliquely on the frame, and means for producing a relative lateral adjustment between the grinding element and the track wheels to change the alinement for grinding on curves and the like.

-12. A grinding machine comprising a frame, track Wheels for supporting the same over a rail to be ground, a grinding element on the frame held in alinement during grinding by said wheels, and supported thereby in proper relation to the surface of the rail, and a rotary cam or eccentric acting against the support of the wheels to raise and lower the grinding element vertically with respect to the rail, when the cam is turned in one direction or the other.

13. A grinding machine comprising a frame, track wheels for supporting the same over a rail to be ground, a grinding element on the frame held in alinement during grinding by said wheels, and supported thereby in proper relation to the surface of the rail, means for obliquely adjusting said grinding element on the frame, and a rotary cam or eccentric acting against the support of the wheels to raise and lower the grinding element vertically with respect to the rail, when the cam is turned in one direction or the other.

In testimony whereof I afiix my signature in presence of two witnesses.

HENRY B. NICHOLS.

Witnesses:

JAMES S. Curr-01m, WM. B. GOODALL. 

